电弧炉炼钢流程是钢铁行业转型的重要工艺路径。随着对特殊钢成分要求的不断提高,对钢铁企业电弧炉炼钢的成分控制提出了更高的要求。合金加料是电弧炉炼钢流程中调控成分的重要手段之一。由于冶炼不同钢种所需配入合金种类以及质量不同...电弧炉炼钢流程是钢铁行业转型的重要工艺路径。随着对特殊钢成分要求的不断提高,对钢铁企业电弧炉炼钢的成分控制提出了更高的要求。合金加料是电弧炉炼钢流程中调控成分的重要手段之一。由于冶炼不同钢种所需配入合金种类以及质量不同,各合金价价格不平均,合金成本一直是电弧炉炼钢冶炼生产成本的重要组成部分。当前,衡阳华菱钢管有限公司大管坯炼钢厂90 t电弧炉炼钢流程合金加料操作过程凭借现场技术人员经验,没有充分考虑不同钢种合金元素收得率差异、不同批次合金原料价格与成分的波动,造成窄成分控制差、合金加料次数多、合金成本高。针对这一问题,基于合金元素收得率动态库与2阶段单纯形算法对合金加料工艺的各影响因素进行分析,采用SQL数据库、Visual Studio 2013开发平台与OPC接口技术,研发了一键操作的合金加料优化系统,将系统计算结果传输至PLC,实现一键合金加料操作。系统运行结果表明,优化得出了不同钢种的合金元素收得率;电弧炉出钢后钢包合金配入比例与电弧炉炼钢流程合金配入比例相比,由73.88%左右提高到85.11%;电弧炉出钢后钢包内合金加料经系统计算成本降低了6.32%~8.07%,精炼炉合金加料经系统计算成本降低了1.04%~22.59%。电弧炉炼钢流程总成本降低了1.53%~10.02%。展开更多
The effects of rare earth Lanthanum on the microstructure, the physical property and the microhardness of Ag-Cu-Ti solder alloy are studied. Experimental results indicate that the addition of Lanthanum can evidently i...The effects of rare earth Lanthanum on the microstructure, the physical property and the microhardness of Ag-Cu-Ti solder alloy are studied. Experimental results indicate that the addition of Lanthanum can evidently improve the wettability and the microhardness of Ag-Cu-Ti solder alloy. Analysis results show that the increase in microhardness is related to the refining and uniform distribution of the intermetallic compounds. Proper content of Lanthanum added in Ag-Cu-Ti alloy solder can be controlled below 0.5% in mass percent.展开更多
文摘电弧炉炼钢流程是钢铁行业转型的重要工艺路径。随着对特殊钢成分要求的不断提高,对钢铁企业电弧炉炼钢的成分控制提出了更高的要求。合金加料是电弧炉炼钢流程中调控成分的重要手段之一。由于冶炼不同钢种所需配入合金种类以及质量不同,各合金价价格不平均,合金成本一直是电弧炉炼钢冶炼生产成本的重要组成部分。当前,衡阳华菱钢管有限公司大管坯炼钢厂90 t电弧炉炼钢流程合金加料操作过程凭借现场技术人员经验,没有充分考虑不同钢种合金元素收得率差异、不同批次合金原料价格与成分的波动,造成窄成分控制差、合金加料次数多、合金成本高。针对这一问题,基于合金元素收得率动态库与2阶段单纯形算法对合金加料工艺的各影响因素进行分析,采用SQL数据库、Visual Studio 2013开发平台与OPC接口技术,研发了一键操作的合金加料优化系统,将系统计算结果传输至PLC,实现一键合金加料操作。系统运行结果表明,优化得出了不同钢种的合金元素收得率;电弧炉出钢后钢包合金配入比例与电弧炉炼钢流程合金配入比例相比,由73.88%左右提高到85.11%;电弧炉出钢后钢包内合金加料经系统计算成本降低了6.32%~8.07%,精炼炉合金加料经系统计算成本降低了1.04%~22.59%。电弧炉炼钢流程总成本降低了1.53%~10.02%。
基金the Natural Science Foundation of Jiangsu Province(BK2006723)the China Postdoc-toral Science Foundation(20060400282)~~
文摘The effects of rare earth Lanthanum on the microstructure, the physical property and the microhardness of Ag-Cu-Ti solder alloy are studied. Experimental results indicate that the addition of Lanthanum can evidently improve the wettability and the microhardness of Ag-Cu-Ti solder alloy. Analysis results show that the increase in microhardness is related to the refining and uniform distribution of the intermetallic compounds. Proper content of Lanthanum added in Ag-Cu-Ti alloy solder can be controlled below 0.5% in mass percent.
